/
helpers.go
82 lines (72 loc) · 1.67 KB
/
helpers.go
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package sqliteds
import (
"database/sql"
"fmt"
)
const CheckSchemaExistsQuery = `
SELECT 1
FROM sqlite_master
WHERE type = 'table' AND name = 'schema_info';
`
const MarkSchemaCreatedQuery = `
CREATE TABLE schema_info (
id INTEGER PRIMARY KEY
);
INSERT INTO schema_info (id) VALUES (1);
`
const CreateTableSchema = `
CREATE TABLE documents (
"id" uuid NOT NULL PRIMARY KEY,
"user" TEXT,
"text" TEXT,
"created_at" TIMESTAMP,
"last_read_at" TIMESTAMP,
"vector" BLOB,
"metadata" BLOB
);
`
func createTable(path string) (*sql.DB, error) {
db, err := sql.Open("sqlite3", path)
if err != nil {
return nil, fmt.Errorf("opening database: %w", err)
}
schemaExists, err := checkSchemaExists(db)
if err != nil {
fmt.Println("Error checking schema existence:", err)
}
if !schemaExists {
err = createSchema(db)
if err != nil {
return nil, fmt.Errorf("creating schema: %w", err)
}
fmt.Println("local store has been created")
} else {
fmt.Println("local store has already been created.")
}
return db, nil
}
func createSchema(db *sql.DB) error {
_, err := db.Exec(CreateTableSchema)
if err != nil {
return fmt.Errorf("executing SQL statement: %w", err)
}
err = markSchemaCreated(db)
if err != nil {
return fmt.Errorf("marking schema as created: %w", err)
}
return nil
}
func checkSchemaExists(db *sql.DB) (bool, error) {
query := CheckSchemaExistsQuery
var exists int
err := db.QueryRow(query).Scan(&exists)
if err != nil && err != sql.ErrNoRows {
return false, err
}
return exists == 1, nil
}
func markSchemaCreated(db *sql.DB) error {
query := MarkSchemaCreatedQuery
_, err := db.Exec(query)
return err
}